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W. W. LUCAS. APPARATUS FOR EXTRAGTING OIL PROM BONE DUST.

Patented Feb. 7, 1871.

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' fitted dffim WILLIAM W. LUCAS, OF CLEVELAND, OHIO.

Letters Patent No. 111,658, dated February 7, 187.

IMPROVEMENT 2N APPARATUS FOR EXTRACTING OIL FROM BONE-DUST.

""6 Schedule referred to in these Letters Patent: and making partoi thesame.

I, WILLIAM W. LUCAS, of Cleveland, in the county of Cnyahoga and Stateof Ohio, have invented an Apparatus for Extracting Oil from QBone-Dustthat has been used for filtering oil in the process of refininglubricating oil, of which the following is a specification.

The nature of this invention consists in the construction of anapparatus in which the bone-dust may be placed, and by the applicationof a sufiicient degree of heat, and, at the same time, giving the vesselor box in which the dust is confined a rocking and jarring motion, thesides and bottom of the box being perforated, the oil will becaused tosettle to the bottom and drip through the perforations, and may becaught in a pan underneath, thebox. By this means the oil may be easilyand efi"ectually'extracted fromthe dust, making a great saving in time,labor, and material. v

In the drawing- Figure l is a vertical cross-section;

Figure 2 is a longitudinal section; and

Figure 3 is a plan view of my apparatus.

Like letters of reference indicate like parts in the several figures.

A represents a box made of wood or other suitable material, and ofsuflicient size and form convenient for the purpose, and provided with alid, (0, in the top, and a door, I), in one endi O is a second box,somewhat smallerthan the outer one, and placed within it, this box isconstructed with a frame, 0, and has sheet-metal sides, ends, and bottom0 c, perforated with a large number of small holes. The box O rests onand is supported by a crossbar, I), placed across the middle of the boxA, the ends of said bar D being round and resting in notches cut in theside rails E E lying along the bottom of the box A.

Lying underneath the box 0 and suspended under the end rails FF is a,pan, G, broader and longer than the box 0, for catching the oil whichdrips from it, and has an outlet-pipe, 7:, by which the oil is drawn orruns out from the pan;

Lying underneath the pan, but not touching it, is a steam-pipe, k,passing back and forth several times throughout the length of the box A,by which the box is heated.

Upon the side of the box 0 is attached an arm, I, which passes outthrough a slot in the door of the box A, by means of which the box 0 isworked and the contents agitated. Any suitable power may be applied tothe arm I for that purpose.

The ends of the box 0 are fastenend on by means of bolts 41 'i, by whichthe end near the door I) may be removed for the'purpose of raking outthe contents of the box, the box 0 being filled through the lid win thetop of the box A, the box O being open at the top. I

Itwill be seen that the box O restsa little distance above the rails FF, so-that when it is rocked the ends of the box strike upon the rails,which gives it a jarring eifect, and causes a settling of the dust in acompact form, and thus causes the oil to be expressed from the dust andto ooze out through the perforations in the sides and bottom and to rundown and drip into the pan Gr underneath.

On the rails F F'and cross-bar D are placed'bands, n n, having theiredges turned up, which are designed to prevent the oil from runningbeyond and falling over the edges of the pan G; the use of thesteampipes being to heat the contents of the box, and thus render itmore limpid, and cause it to the more readily run from the bone dust.

By this means a simple, cheap, and effectual method is provided forextracting oil from bone-dust used for filtering the oil in the processof refining lubricating oil, as a considerable quantity of oilnecessarily adheres to the dust, and which this invention is designed toprocure by separation.

I claim as my invention- H The box 0, constructed substantially asdescribed, and resting on a cross-bar, D, and the pan G, stea pipes k,and the box A, when the same are constructed, combined, arranged, andoperating substantially as shown, and for the purpose set forth.

Witnesses: WILLIAM W. LUCAS.

Gno. W. TLBBITTS, FRED. H. BIEBMANN.

